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High resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia

High resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia
High resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia
High resolution seismic and ground-penetrating radar (GPR) have been acquired over Lake Nikolay in the western Lena Delta (Siberia) in order to study the uppermost basin fill and the bordering frozen margins. GPR measurements were completed on the frozen lake and its permafrost margins, while high-resolution seismic data were acquired from the lake during open-water conditions in summer using a 1.5-11.5 kHz Chirp profiler. The combined use of the two profiling systems allows stratigraphic profiling in both frozen and unfrozen parts of the lake. Shallow seismic reflection images of the uppermost 4 - 5 m of sediments are compared to GPR sections, which have approximately the same horizontal and vertical resolution. Short sediment cores aid calibration of the geophysical data.
Permafrost, High resolution imaging, Lena Delta, Lake Nikolay, Siberia, Thermokarst, Ground Penetrating Radar, GPR, Chirp, Comparison
1045-6740
259-269
Schwamborn, G.J.
0205fcee-d5fc-42b4-9b5b-fb211bdf132d
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Rachold, V.
6cecb14c-aa3c-42d9-b7d5-b2466360b8fc
Schwamborn, G.J.
0205fcee-d5fc-42b4-9b5b-fb211bdf132d
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Rachold, V.
6cecb14c-aa3c-42d9-b7d5-b2466360b8fc

Schwamborn, G.J., Dix, J.K., Bull, J.M. and Rachold, V. (2002) High resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia. Permafrost and Periglacial Processes, 13 (4), 259-269. (doi:10.1002/ppp.430).

Record type: Article

Abstract

High resolution seismic and ground-penetrating radar (GPR) have been acquired over Lake Nikolay in the western Lena Delta (Siberia) in order to study the uppermost basin fill and the bordering frozen margins. GPR measurements were completed on the frozen lake and its permafrost margins, while high-resolution seismic data were acquired from the lake during open-water conditions in summer using a 1.5-11.5 kHz Chirp profiler. The combined use of the two profiling systems allows stratigraphic profiling in both frozen and unfrozen parts of the lake. Shallow seismic reflection images of the uppermost 4 - 5 m of sediments are compared to GPR sections, which have approximately the same horizontal and vertical resolution. Short sediment cores aid calibration of the geophysical data.

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Published date: 2002
Keywords: Permafrost, High resolution imaging, Lena Delta, Lake Nikolay, Siberia, Thermokarst, Ground Penetrating Radar, GPR, Chirp, Comparison

Identifiers

Local EPrints ID: 40817
URI: http://eprints.soton.ac.uk/id/eprint/40817
ISSN: 1045-6740
PURE UUID: ca0fb7d2-46d4-4a5c-91b1-ad7fec138f45

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Date deposited: 11 Jul 2006
Last modified: 19 Nov 2021 19:46

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Contributors

Author: G.J. Schwamborn
Author: J.K. Dix
Author: J.M. Bull
Author: V. Rachold

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